EP2976485A2 - Top drive for a drill string - Google Patents
Top drive for a drill stringInfo
- Publication number
- EP2976485A2 EP2976485A2 EP14708278.8A EP14708278A EP2976485A2 EP 2976485 A2 EP2976485 A2 EP 2976485A2 EP 14708278 A EP14708278 A EP 14708278A EP 2976485 A2 EP2976485 A2 EP 2976485A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- bearing part
- main
- main spindle
- pressure
- auxiliary bearing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 230000001105 regulatory effect Effects 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 2
- 230000005540 biological transmission Effects 0.000 description 10
- 238000005553 drilling Methods 0.000 description 10
- 239000012530 fluid Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000036316 preload Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B3/00—Rotary drilling
- E21B3/02—Surface drives for rotary drilling
- E21B3/022—Top drives
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/22—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings
- F16C19/30—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for axial load mainly
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/54—Systems consisting of a plurality of bearings with rolling friction
- F16C19/56—Systems consisting of a plurality of bearings with rolling friction in which the rolling bodies of one bearing differ in diameter from those of another
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C25/00—Bearings for exclusively rotary movement adjustable for wear or play
- F16C25/06—Ball or roller bearings
- F16C25/08—Ball or roller bearings self-adjusting
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2352/00—Apparatus for drilling
Definitions
- the invention relates to a power rotary head for a drill pipe, with a transmission housing having a gear unit, with a rotatably mounted in the gear unit about a rotation axis main spindle to which the drill string is coupled, wherein the transmission unit is an axial main bearing, with a lower main bearing part and a relative to lower main bearing part around the rotation axis rotatable upper main bearing part, wherein the main spindle on the upper main bearing part and the lower main bearing part to the transmission housing directly abut, and wherein the transmission unit an axial auxiliary bearing, with a lower auxiliary bearing part and relative to the lower auxiliary bearing part about the axis of rotation rotatable upper auxiliary bearing part, wherein the lower auxiliary bearing part rests on the main spindle and the upper auxiliary bearing part directly or indirectly on the transmission housing.
- Such power turrets serve, among other things, the rotary drive and the lowering and recuperation of the drill pipe, for this purpose the drill pipe is non-rotatably coupled to the main spindle during operation, usually by means of a screw connection
- reaction torques are introduced into the mast during operation via the guide carriages.
- the lowering and raising the power rotary head and thus the drill pipe usually serves a pulley assembly which is held at the upper end of the mast and is connected for example via hanger with the power turret.
- the gear unit is connected to at least one electrically or hydraulically driven rotary motor.
- an axial bearing must be provided for the main spindle, which is suitable for introducing the mass present in a drill string with a working head into the housing.
- the axial bearing must permanently withstand the dynamic loads occurring during a drilling operation.
- the axial bearing of the main spindle comprises an axial main bearing. It is designed as a tapered roller bearing. Its lower main bearing part rests against the housing, at its upper main bearing part the main spindle is supported by a radial flange.
- a spring unit is provided in the known power rotation, which presses the upper auxiliary bearing part on the rolling elements.
- the invention is therefore the object of developing a generic power rotary head such that the wear of the thrust bearing is reduced and he has a longer service life. This object is achieved by the reproduced in claim 1 power turret and solved by the reproduced in claim 9 method.
- an active pressure generating device is provided between the upper auxiliary bearing part and the gear housing and / or between the lower auxiliary bearing part and the main spindle and / or between the lower main bearing part and the gear housing and / or the upper main bearing part and the main spindle.
- the arrangement of the active pressure generating device between the upper auxiliary bearing part and the transmission housing is preferred.
- active pressure generating device is meant a pressure generating device, by means of which a variable and thus adaptable to different operating conditions of the power rotary head pressure is exercisable head Due to the inventive development of the power rotary head, it is thus possible, the bias under which the main thrust bearing For example, the bias voltage may be adjusted depending on the rotational speed or tensile or compressive forces acting on the main spindle so that the axial main bearing and the auxiliary bearing are operated at least almost under optimal (pressure) conditions It compensates for tolerances without the use of shims or the like, and simplifies the maintenance and assembly of the main thrust bearing by freeing the printer access point within the gearbox housing Active pressure generating device can be provided instead of a spring arrangement. A conversion of existing power rotary heads is therefore possible.
- the active pressure generating means comprises a hydraulic or pneumatic pressure acted upon Piston.
- the piston is designed to be pressurized with hydraulic pressure, since it is permanently available for driving the motor of the power rotary head and / or other components of a drilling device that uses a force printhead.
- the piston may be a force acting on the upper auxiliary bearing part annular piston in a first embodiment.
- opening channel is sufficient.
- a plurality of cylindrical pistons acting on the upper auxiliary bearing part are provided.
- this second embodiment is more complicated due to the plurality of components and the required plurality of opening into the individual cylinders for each piston channels, it is advantageous that any inclinations of the upper auxiliary bearing part and / or the housing from a mutually exactly parallel position be compensated automatically, which could lead in the case of an annular piston to tilting the same in the annulus.
- the active pressure generating means comprises at least one piezoelectric element.
- the pressure causing the bias of the main thrust bearing can then be adjusted by varying the height of the voltage applied to the piezoelectric element to the respective operating state in which a drilling device comprising the power rotary head is located.
- Such a design of the pressure-generating device is particularly preferred when the force-rotating head has an electrically driven drive motor.
- a pressure control device is preferably provided, by means of which the pressure generated by the active pressure generating device is also changeable during the operation of the power rotary head. Due to this measure, the preload of the main thrust bearing can be adapted to different operating states, without that the operation of the power rotary head would have to be interrupted. Inter alia, the following different operating states are conceivable which require a change in the pressure exerted by the pressure generating device in order to reduce the wear and increase the service life of the main axial bearing:
- Another contact pressure which is regularly increased compared with the contact pressure during transport or storage, can be selected when the drilling device comprising the force turning head according to the invention is in "normal" drilling operation
- the pressure applied to the pressure generating means is then adjusted by the applied hydraulic or pneumatic pressure or applied electrical voltage such that the dynamic loads acting on the main spindle during normal operation have not, according to experience, led to damaging movements in the bearing 3. If the sinking of the hole is inhibited, for example, by unexpected hard rock in the ground, this can cause the drill string no longer depends on the main spindle, but the power turret on the Hauptspi pressure on the drill string.
- the lower end of the upper part of the drill string jumps up to the stop and thereby exerts on the lower part of the drill string and possibly attached thereto drilling tool a striking force through which the drill pipe or the drilling tool to be solved.
- large dynamic forces can arise in the axial main bearing, in particular those which can lead to lifting and subsequent collisions of the bearing parts. Jaring operation should therefore always be avoided.
- the maximum allowable preload in the main thrust bearing can be generated by the pressure generating device of the present invention to reduce the risk of damage to a technically feasible minimum.
- a pressure control device by means of which the pressure generated by the active pressure generating device to different operating conditions are customizable
- a pressure regulating device by means of which the pressure generated by the active pressure generating means is controlled in dependence on the forces acting on the main spindle in the direction of the axis of rotation forces.
- force transducers can be provided in the main spindle, in the drill pipe and / or in drilling tools provided on the drill pipe, which detect the direction and size of the forces acting on the main spindle.
- Other operating variables such as speed at which the main spindle is operated, the torque which is transmitted by means of the main spindle, can be detected.
- a regulating device then regulates the pressure generated by the active pressure generating device preferably as a function of the detected values according to a predetermined dependency in such a way that movements in the axial main bearing are not to be expected, but an excessive pressure load of the components of the axial main bearing due to an excessively high bias voltage is avoided.
- FIG. 1 shows a generic prior art rotary head in a partially sectioned side view (view perpendicular to the axis of rotation of the main spindle);
- FIG. 1 a the detail I in Figure 1 in an enlarged view.
- FIG. 2 shows a first embodiment of a force rotary head according to the invention in a representation corresponding to Figure 1;
- Fig. 2a shows the detail II in Figure 2 with a hydraulic block diagram.
- 2b is a detail view of a piston of the active pressure generating device in a view according to Figure 2 from above ..;
- Fig. 3 shows a second embodiment of the invention Kraftfit head in a Fig. 2 corresponding view;
- FIG. 3a shows the detail III in Figure 3 together with a hydraulic block diagram.
- FIG. 3b is a detail view of some pistons of the active pressure generating device in a view according to FIG. 3 from above and FIG. 4 is an enlarged view of the hydraulic block diagram.
- the designated in Fig. 1 as a whole with 100 power rotary head comprises a gear unit 1, which has a transmission housing 2.
- a main spindle 3 is rotatably supported about a rotation axis D.
- the main spindle 3 is radially supported by means of an upper radial bearing 4 and by means of a lower radial bearing 5 in the transmission housing 2.
- an axial main bearing 6 is provided between the upper and lower radial bearings 4, 5, an axial main bearing 6 is provided. It comprises a lower main bearing part 7, which rests on a flange 8 of the gear housing 2.
- the axial main bearing comprises an upper main bearing part 9, which is supported on the lower main bearing part 7 by means of tapered rollers 10.
- main spindle 3 At the upper main bearing part 9 is the main spindle 3 with a radial flange 1 1. It is thus secured by means of the axial main bearing against a displacement of FIG. 1 down.
- the Axialhauptlager 6 is, as can be seen in Fig. 1, compared to the other bearings large dimensions, since in particular the weight of the must catch in the drawing, not shown, connected to the main spindle 3 drill pipe.
- an axial auxiliary bearing 12 is provided in the axial position. It comprises a lower auxiliary bearing part 13, which is supported from above on the radial flange 1 1. About bearing rollers 14 is based on the lower auxiliary bearing part from an upper auxiliary bearing part 15. The upper auxiliary bearing part 15 is mounted in the transmission housing 2. Between the upper auxiliary bearing part 15 and the gear housing 2 and / or between the lower auxiliary bearing part 13 and the radial flange 1 1 unrecognizable spacers may be provided to compensate for at least coarse tolerances in the drawing.
- the upper auxiliary bearing part is 15 of the Axialwhislagers 12 by means of a arranged in holes 16 spring assembly 17 of FIG. 1 biased down.
- the main spindle 3 is thus pressed down under the action of the spring arrangement caused by the spring force.
- FIGS. 2 and 3 two embodiments of the invention according to the development of the described with reference to FIG. 1, generic power rotary head 100 are described.
- corresponding components in FIGS. 2 and 3 are provided with the same reference numerals as in FIG. Reference is made to the description of FIG. 1 in this respect.
- the illustrated in Fig. 2, and now designated as a whole with 200 power turret comprises an active pressure generator 18, which between the upper Auxiliary bearing part 15 and the Gethebegereheatuse 2 instead of the spring assembly 17 is provided.
- the active pressure generating means comprises an annular piston 19 which is mounted laterally sealing in a provided in the transmission housing 2 annular groove 20 with this.
- the annular groove 20 opens a channel 21, supplied by means of which pressurized hydraulic fluid and thus the annular piston 19 - depending on the pressure under which the supplied hydraulic medium is - can be pressed with different force from above against the upper auxiliary bearing part 15.
- the pressure is preferably chosen so that the main bearing 6 is operated under optimum conditions.
- a plurality of cylindrical pistons 19 'acting against the upper auxiliary bearing part 15 from above are used instead of the annular piston 19, a plurality of cylindrical pistons 19 'acting against the upper auxiliary bearing part 15 from above are used.
- the pistons 19 ' are mounted in cylinders 20', which are fluidically connected to each other, so that all the pistons 19 'can be acted upon by the same hydraulic pressure.
- the hydraulic device 22 comprises a tank 23 for the hydraulic fluid as well as a tank connected downstream of the hydraulic pump with check valve 24.
- the tank 23 and the hydraulic pump with check valve 24 may belong to a hydraulic unit, which for the operation of a rig, to wel rather the power rotary head 200, 300 according to the invention belongs, provides necessary hydraulic fluid available.
- a spring-loaded and electrically switchable switching valve 26 is connected via a hydraulic line 25.
- the switching valve 26 is connected to the channel 21 via a hydraulic line 27.
- a hydraulic accumulator with gas tensioning device 28 To the hydraulic line 27, a hydraulic accumulator with gas tensioning device 28, a pressure measuring instrument 29 and an electrically controllable pressure relief valve 30 are connected.
- the switching valve 26 and the pressure relief valve 30 are electrically connected to a control or regulating device 31.
- FIG. 4 shows the hydraulic device in a state in which the active pressure generating device 18 is disconnected from the hydraulic pump 24.
- the hydraulic lines 25 and 27 are shut off by the switching valve 26.
- the hydraulic line 27 is determined by the hydraulic accumulator 28 pressure.
- the switching valve 26 and the pressure relief valve 30 by means of the control or regulating device 31 with an electrical signal, which is a measure of the desired pressure value, which is to be generated by means of the active pressure generating device 18, acted upon ,
- an electrical signal which is a measure of the desired pressure value, which is to be generated by means of the active pressure generating device 18, acted upon .
- the switching valve 26 is switched, so that the hydraulic line 27 is connected to the hydraulic line 25 and thus the channel 21 is acted on by the hydraulic pressure provided by the hydraulic pump 24. If the hydraulic pressure provided by the control or regulating device is reached, the overpressure valve 30 opens. If the pressure drops below the desired value, the overpressure valve closes.
- the pressure preset by the control or regulating device is present at the active pressure-generating device 18, with any pressure fluctuations being smoothed by the hydraulic accumulator 28. Also possible losses of hydraulic fluid due to leaks can be compensated up to a limited by the volume of the hydraulic accumulator 28 scope.
- the control or regulating device 31 may be designed either for manual specification of a desired pressure value. It is strictly speaking then a control device. However, it is also possible to form the control or regulating device 31 as a control device in the strict sense. It then comprises an additional signal input to which applied via suitable sensors, for example, acting on the main spindle 3 in the direction of the axis of rotation applied force values. With the aid of an algorithm stored in the control device, the switching valve 26 and the overpressure valve 30 are then actuated such that the pressure prevailing in the hydraulic line 27 is required to generate the optimum preload of the axial main bearing 6 for the respective operating state.
- the output of the control or regulating device may be connected directly to the piezoelectric elements, provided that the control or regulating device with respect to the electrical values generated at the output to the piezoelectric see Elements are adapted.
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fluid Mechanics (AREA)
- Environmental & Geological Engineering (AREA)
- Physics & Mathematics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Support Of The Bearing (AREA)
- Earth Drilling (AREA)
- Magnetic Bearings And Hydrostatic Bearings (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102013102805.5A DE102013102805A1 (en) | 2013-03-19 | 2013-03-19 | Power rotary head for a drill pipe |
PCT/EP2014/054420 WO2014146910A2 (en) | 2013-03-19 | 2014-03-07 | Top drive for a drill string |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2976485A2 true EP2976485A2 (en) | 2016-01-27 |
EP2976485B1 EP2976485B1 (en) | 2018-11-21 |
Family
ID=50236191
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP14708278.8A Active EP2976485B1 (en) | 2013-03-19 | 2014-03-07 | Top drive for a drill string |
Country Status (7)
Country | Link |
---|---|
US (1) | US10221626B2 (en) |
EP (1) | EP2976485B1 (en) |
CN (1) | CN105102751B (en) |
DE (1) | DE102013102805A1 (en) |
DK (1) | DK2976485T3 (en) |
RU (1) | RU2640529C2 (en) |
WO (1) | WO2014146910A2 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NO345632B1 (en) | 2016-03-30 | 2021-05-18 | Mhwirth As | Drilling system and method of operation |
US10788390B2 (en) | 2018-06-05 | 2020-09-29 | Bauer Maschinen Gmbh | Method for the calibration of a top drive and top drive for a drill string |
Family Cites Families (36)
Publication number | Priority date | Publication date | Assignee | Title |
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US2959159A (en) * | 1958-05-16 | 1960-11-08 | Battelle Development Corp | Free-piston internal combustion apparatus |
US4449596A (en) | 1982-08-03 | 1984-05-22 | Varco International, Inc. | Drilling of wells with top drive unit |
US4529045A (en) | 1984-03-26 | 1985-07-16 | Varco International, Inc. | Top drive drilling unit with rotatable pipe support |
JPH028102Y2 (en) * | 1985-02-07 | 1990-02-27 | ||
US4850719A (en) * | 1988-09-12 | 1989-07-25 | The Torrington Company | Bearing with adjustable stiffness |
EP0392013A1 (en) * | 1988-10-25 | 1990-10-17 | Nauchno-Proizvodstvennoe Obied. Po Mekh., Robot. Truda I Sovershenstv. Remont. Obesp. Predp. Chernoi Metall. Npo Chermetmekh. | Bearing unit for vertical support |
US5251985A (en) * | 1991-09-26 | 1993-10-12 | General Electric Company | Squeeze film damper seal |
RU2027846C1 (en) | 1991-12-02 | 1995-01-27 | Свердловская организация творческого союза изобретателей | Swivel with upper drive |
US5364190A (en) * | 1992-01-14 | 1994-11-15 | Toshiba Kikai Kabushiki Kaisha | Hydrostatic bearing apparatus |
US6394657B1 (en) * | 1993-02-22 | 2002-05-28 | Nsk Ltd. | Preloading method for preload-adjustable rolling bearing and manufacture of the same |
US5238308A (en) * | 1992-05-04 | 1993-08-24 | Rockwell International Corporation | Adjustable gap hydrostatic element |
US6547002B1 (en) * | 2000-04-17 | 2003-04-15 | Weatherford/Lamb, Inc. | High pressure rotating drilling head assembly with hydraulically removable packer |
US6422757B1 (en) * | 2000-12-15 | 2002-07-23 | Industrial Technology Research Inst. | Active piezoelectric spindle bearing preload adjustment mechanism |
KR100413061B1 (en) * | 2001-01-19 | 2003-12-31 | 한국과학기술연구원 | Smart foil journal bearing using piezoelectric actuators |
BR0312576A (en) * | 2002-07-10 | 2005-04-19 | Turbocor Inc | Device for relieving thrust load in a rotor bearing system using permanent magnets |
US6695071B1 (en) * | 2002-08-29 | 2004-02-24 | Devall Donald L. | Drill head assembly |
US7188686B2 (en) | 2004-06-07 | 2007-03-13 | Varco I/P, Inc. | Top drive systems |
US20060023985A1 (en) * | 2004-07-27 | 2006-02-02 | Mircea Gradu | Adaptive bearing system containing a piezoelectric actuator for controlling setting |
JP2006161991A (en) * | 2004-12-09 | 2006-06-22 | Jtekt Corp | Thrust roller bearing |
RU55846U1 (en) | 2004-12-28 | 2006-08-27 | Общество с ограниченной ответственностью "ПромТехИнвест-Сервис" | UPPER DRILL RIG DRIVE POWER DRIVE |
JP2006316932A (en) * | 2005-05-13 | 2006-11-24 | Aisin Ai Co Ltd | Lubrication mechanism for transfer |
EP2822151B1 (en) | 2005-10-03 | 2016-02-03 | LeTourneau Technologies Drilling Systems, Inc. | Top drive drilling system and other applications using a low speed direct drive AC motor |
US7401664B2 (en) | 2006-04-28 | 2008-07-22 | Varco I/P | Top drive systems |
JP4984673B2 (en) * | 2006-06-22 | 2012-07-25 | 日産自動車株式会社 | Drive device |
US20090159271A1 (en) * | 2007-12-21 | 2009-06-25 | Bastiaan De Jong | Top drive systems for wellbore & drilling operations |
CN201588532U (en) | 2010-02-03 | 2010-09-22 | 宝鸡石油机械有限责任公司 | Pneumatic power installation for high-pressure heavy-load oil rig taps |
WO2011156133A2 (en) * | 2010-06-07 | 2011-12-15 | National Oilwell Varco. L.P. | Fluid-supported thrust bearing |
CN102373879B (en) | 2010-08-12 | 2015-10-21 | 四川宏华石油设备有限公司 | A kind of top is driven |
CN201891380U (en) * | 2010-12-13 | 2011-07-06 | 北京市三一重机有限公司 | Rotary drilling rig and power control box thereof |
US8393393B2 (en) * | 2010-12-17 | 2013-03-12 | Halliburton Energy Services, Inc. | Coupler compliance tuning for mitigating shock produced by well perforating |
DE102011005360A1 (en) * | 2011-03-10 | 2012-09-13 | Brose Fahrzeugteile Gmbh & Co. Kg, Hallstadt | Drive device with actively mounted drive shaft |
DE102011080651A1 (en) * | 2011-08-09 | 2013-02-14 | Schaeffler Technologies AG & Co. KG | Axialpendelrollenlageranordnung, in particular for a ship propeller shaft |
CN202578490U (en) | 2012-04-25 | 2012-12-05 | 郑州正弘桩工机械制造有限公司 | Power head for long spiral drilling machine |
CA2869668A1 (en) * | 2012-04-27 | 2013-10-31 | Canrig Drilling Technology Ltd. | Bearing apparatus and methods |
CN202745683U (en) | 2012-06-08 | 2013-02-20 | 沈毅 | Top drive drilling device with integrated hydraulic system |
DE102013215557A1 (en) * | 2013-08-07 | 2015-03-05 | Aktiebolaget Skf | Storage system and method for operating a storage system |
-
2013
- 2013-03-19 DE DE102013102805.5A patent/DE102013102805A1/en not_active Ceased
-
2014
- 2014-03-07 RU RU2015144460A patent/RU2640529C2/en active
- 2014-03-07 WO PCT/EP2014/054420 patent/WO2014146910A2/en active Application Filing
- 2014-03-07 DK DK14708278.8T patent/DK2976485T3/en active
- 2014-03-07 US US14/777,746 patent/US10221626B2/en active Active
- 2014-03-07 CN CN201480017274.XA patent/CN105102751B/en active Active
- 2014-03-07 EP EP14708278.8A patent/EP2976485B1/en active Active
Also Published As
Publication number | Publication date |
---|---|
RU2015144460A (en) | 2017-04-27 |
CN105102751B (en) | 2017-06-09 |
DK2976485T3 (en) | 2019-03-18 |
CN105102751A (en) | 2015-11-25 |
US10221626B2 (en) | 2019-03-05 |
WO2014146910A3 (en) | 2015-04-02 |
US20160290045A1 (en) | 2016-10-06 |
EP2976485B1 (en) | 2018-11-21 |
WO2014146910A2 (en) | 2014-09-25 |
RU2640529C2 (en) | 2018-01-09 |
DE102013102805A1 (en) | 2014-09-25 |
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